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Old 05-18-2016, 06:24 AM   #31
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Hey gang,

Speaking of flooring, do most school buses tend to have the vinyl flooring AND plywood subflooring when you go to rip it out? How thick are these materials, typically? One inch, three-quarters of one inch (combined)? Sounds like an odd question, I guess. Just trying to estimate actual vertical height in potential buses... sans-flooring.
My stock floor is about 1/2 ply with the rubber puke mat on top.
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Old 05-18-2016, 11:24 AM   #32
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...and how many of you insulated your floors? In doing so, how much vertical space did you lose?
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Old 05-18-2016, 11:33 AM   #33
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...and how many of you insulated your floors? In doing so, how much vertical space did you lose?
I'm planning on 2-2 1/2" of insulation on the floor. When it's all said and done, I'll have probably lost about 3-3 1/2 inches of vertical
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Old 05-18-2016, 01:11 PM   #34
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I'm planning on 2-2 1/2" of insulation on the floor. When it's all said and done, I'll have probably lost about 3-3 1/2 inches of vertical
Damn. That sounds like a lot. I was hoping to only lose 1.5-2".
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Old 05-18-2016, 02:58 PM   #35
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...and how many of you insulated your floors? In doing so, how much vertical space did you lose?
Floating floor frame 2" +3/4th "plywood base 1/4" for flooring is my plan. So 3 inches lose in height.
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Old 05-18-2016, 03:00 PM   #36
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So I just had a guy come out yesterday and look at the bus to do spray foam. He mentioned spraying the bottom of the bus so I wouldn't lose as much floor space. I don't know how well that would work and would still prolly do 1/2 of foam board under my plywood. Any thoughts on this? I figured I could use my old ceiling panels to protect the foam from debri while going down the road.

Reeses on recess has some great vids on floors and also just posted a vid on spray foaming the inside.
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Old 05-18-2016, 03:26 PM   #37
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Damn. That sounds like a lot. I was hoping to only lose 1.5-2".
I also have 12" windows and stand 6', so I can afford to lose some vertical distance.
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Old 05-18-2016, 05:18 PM   #38
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There are people here with foam under their floor. It appears to take the weather pretty well other than discoloring from road grime. Some threads have talked about spraying bed liner on the foam under the floor for protection.

I also want to insulate from underneath because I intend to frequently use the L-track that covers my floor. Besides, it's not a black rubber mat. My floor does have some issues and may need to eventually come out, but for now spraying underneath is the option toward warmer feet. Well, that and the big wood stove I got.
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Old 05-18-2016, 05:45 PM   #39
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I have 3.5" of foam in the floor and 3" in the ceiling. 3/4" OSB and then 10mm laminate flooring on top of that. I raised the roof 16" so I didn't lose any height. If you're concerned just do a small raise and you'll be good to go. It's really not as hard as everybody seems to think it is.
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Old 05-19-2016, 10:55 PM   #40
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Two Cents

I am 6'4 and the interior height of my bus (3800 international) is 6'2 and 6'4 to 6'5 with the roof hatches up but not open.

Now, I plan to do a lift just for my general brain health.

At first, I was going to lift the roof 16" but due to heavy outer skin rust and other big issues. I am going to lift it roughly 20" and extend the outer skin skirting down about 8-9". I want to give my Bus a semi-couch bus look with a lower skirt and it also helps with mounting under carriage storage containers.

If, I lift 20" I can hang new sheet metal panels vertically to include the lift and skirt extension. An interesting concept and hopefully it will pan out properly.

Also, being in Northern Minnesota our temps often vary 140 degrees from season to season.

I plan to add two layers of 2" insulation to the floor giving me roughly 4" of insulation. The same with the roof in time if possible. A flooring interior floor is the overall game plan.

Two inches of wall insulation should be plenty. I have always applied general home construction rules to my bus. A good set of boots and a good cover solves a lot of problems down the road.

Hope my words have helped a little.
Best of luck, keep us posted.
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